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	<head>
		<meta charset="UTF-8">
		<title>组合起来，精准控制</title>
		<style>
			p#n{
				font-size: 50px;
			}
			.good{
				font-size:40px;
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			.poem{line-height: 50px;font-size:70px;}
			.tang{border: 15px groove blue;font-size:200px;}
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	</head>
	<body>
		<p id="n">
			望庐山瀑布
		</p>
		<p>
			日照祥露沈紫嫣
		</p>
		<h4 class="good poem tang">写的真好</h4>
	</body>
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